Press



y 9, 1940- G. w. JOHNSTON I 2,207,221 I PRESS Filed July 21, 1938 2 Sheets-Sheet l Jmm HNSTON,

GEORGE W. .To

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G. W. JOHNSTON PRESS Filed July 21, 1938 2 Sheets-Sheet 2 Q 15- bra i J /4 37/- "i 71' 624mm: 1, "JI /3/U "T4,;JW

Patented July 9, 1940 'IUNITED STATES PATENT. OFFICE George W. Johnston, Little Rock, Ark., assignor to Buckeye Iron Ala-Brass Works, Dayton, Ohio,

a corporation of Ohio Application July 21, 1938, Serial No. 220,449

1 Claim.

My invention relates to presses and in particular to a novel construction of top boxes for presses.

It is the object of my invention to provide a novel form of top box that may be readily assembled with the hanging links, head block and intermediate boxes.

It is a further object to provide such a top box that will eliminate the retainingscrew bolts heretofore employed.

It is a further object to provide a top box positioned by the strain rods, aligned by the strain rods, and held in position by the head block so as to provide a rigid construction on which the hanging links can be mounted in association with intermediate boxes.

Referring to the drawings:

Figure l is an elevation of a press showing this invention.

Figure 2 is a detailed elevation of the top of the press showing the top box and its relationship to the strain rods and the intermediate boxes.

Figure 3 is a section on the line 33 looking in the direction of the arrows on Figure 1.

Figure 4 is a plan View with one link in section of a corner of one of the several boxes show-. ing the method of fastening the drop-links to the boxes.

Figure 5 is a detail of the connection of the links with the several boxes.

This invention relates to animprovement in hydraulic presses which are particularly adapted to use in the pressing of oil-containing materials such as oil-containing seeds so as to extract the oil therefrom. In such presses a plurality of superimposed flat seed-receiving receptacles is provided between a head block and the top of a piston or ram adapted to be moved towards said head block by hydraulic pressure exerted by a hydraulic cylinder containing the piston or ram. Strain rods connect the head block with the base of the press and take up the reactive force brought about by the pressure of extraction. The seed receiving receptacles or boxes are formed by a series of flat plates each having disposed upon its upper surface an upwardly extending block and upon its lower surface a pair of flanges which prevent the seeds from working outwardly and which are spaced apart a distance slightly greater than the width of the block. The boxes are superimposed one over the other, with the flange side of each next to the block of the next lower box. The lowest plate in the series has no flanges on its lower surface, having merely an upwardly extending block on its upper surface and is carried on or formed integral with the top of the piston. The uppermost box is commonly known as a top box. It has no block upon its upper surface but is formed with a flat upper surface which is commonly mounted flush against the lower surface of the head block, and is commonly held in place on the head block by threaded screws passing through the top box into screw-threaded holes in the head block.

In operation the piston carrying the lowest plate is moved hydraulically upwardly towards the head block, each of the blocks on the series 1 of plates going inside of the flanges on the lower side of the plates thereabove, thereby compressing the seeds and extracting the oil therefrom.

Referring to the drawings in detail, I designates the base of a press having a conventional ram 2. This base has mounted thereon strain rods 3 which extend through a head block 4 and are retained in position by the retaining nuts 5. The particular feature of this invention is the new type of top box generally designated 6'. This top box is more fully shown in Figure 3. It consists of a plate having four openings 1 for the reception of the strain rods 3'. The plate therefor extends as at 8 between the strain rods and also the plate 6 of the top box extends as at 9 transversely between the strain rods. The top box projects as at l0 beyond the general limits of the press to facilitate the attachment of the top box through the links H to the next intermediate box below designated l2. These links are prevented from becoming removed by the cotter pins l3 which hold the links I l in position in the slots [4 in the margins of the boxes. On each box are mounted a pair of opposed box angles l5.

By utilizing the top box plate with holes I in it, it can be mounted upon the strain rods 3 between the shoulders 3a on the strainrods 3 and the head block 4, which in turn is held in position by the threaded nuts 5.

Heretofore the top box merely extended between'the strain rods and was held on the head block by threaded screws. This was not only diflicult to handle but it resulted in a great many other operation problems. By mounting the top box on the strain rods and clamping the top box between the shoulders 3a on the strain rods 3 and head block 4, the top box is held perma- A common cotter pin l3 retains both the upper and lower bolts ll.

It will be understood that I desire to comprehend within my invention such modifications as come within the scope of the claim and the invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

In a press having a plurality of strain rods having shoulders thereon, a top box having a plurality of openings for receiving said strain rods and being supported on said shoulders, a

GEORGE W. JOHNSTON. 

